html,
body {
  height: 100%;
  font-size: 16px;
  font-family: 'Helvetica Neue', STHeiti, 'Microsoft YaHei', Helvetica, Arial, sans-serif;
}

.wrap {
  min-height: 100%;
  height: auto;
  margin: 0 auto -60px;
  padding: 0 0 60px;

  > .main {
    padding: 0 0 20px;
  }
}

.footer {
  height: 60px;
  background-color: #f5f5f5;
  border-top: 1px solid #ddd;
  padding-top: 20px;
}

header.nav {
  padding: 0 0 10px 0;
  margin: 0;
  border-bottom: 4px double #CCC;

  .header {
    font-size: 48px;
  }

  .nav {
    margin-top: 20px;
    font-size: 18px;
  }
}

.extension-content {
  margin-top: 20px;
}

.extension {
  h2 {
    border-bottom: 1px solid #CCC;
    padding-bottom: 10px;
  }

  h3 {
    border-bottom: 1px dashed #CCC;
    padding-bottom: 10px;
  }
}